Regarding crumbling tower.
The mechanic is a fun twist on sokoban and each level evolves where you learn new things without it getting to feel repetitive. I also like that many levels have extra space, not necessary for solutions which at least makes me feel free, even if they do not help me. My biggest problem is really level 1. It is both very hard, compared to the other 4-5 starting levels it is by far the hardest. It also introduces the mechanic of "step twice" stones, which is then not used again untill level 13. I sugest moving or removing this level.
I also really like the effort of making the last level which looked really nice.
Don't die
I found it a bit trial-and-error or at least "this seems to be a good strategy" and then apply this strategy on levels until it doesn't work. Rather than "figure it out". I think I got this feeling because so much is happening at once that it is hard to grip what will happen when you make 6 moves in a row. This might not be a bad thing for the game, but rather exactly what you were going for, but I got a bit discouraged by it.
no time to play the blob yet.
Cheers
Ove